Apparatus for heating or sterilizing liquids.



110,756,310. YPATENTED APR. 5, 1904.

I J. WILLMANN. I A APPARATUS FOR HEATING 0R STERILIZING LIQUIDS.

APPLIOATION FILED JULY 16. 1903.

N0 MODEL.

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APPARATUS FOR HEATING OR STEFHLIZING LIQUIDS.

SPECIFICATION forming part of Letters Patent No. 756,310, dated April 5,1904.

Application filed July 16, 1903. Serial No. 165,885. (No model.)

To all whom it may concern.-

Be it known that I, JOSEPH WVILLMANN, a citizen of Germany, residing atChicago, in the county of Cook and State of Illinois, have inventedcertain new and useful Improvements in Apparatus for Heating orsterilizing Liquids; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to makeand use thesame.

My invention relates to a novel construction in an apparatus for heatingor sterilizing liquids, the object being to provide a simple andeflicient apparatus of this character which is particularly adapted forsterilizing or pasteurizing milk; and it consists in the features ofconstruction and combinations of parts hereinafter fully described andclaimed.

The accompanying drawing, illustrating my invention, shows my apparatusin central vertical section. 7

My said apparatus consists of an annular heating-drum A, connected witha source of supply of a heating fluid, and within which is a cylindricalchamber B, adapted to receive the liquid to be heated or sterilized andwhich is closed at its lower end by means of a head C. At the upper endof said drum A is an inwardly extending annular flange D, from which twoconcentric cylinders E and F depend, which terminate at a point abovethe bottom of the chamber B and are closed at their lower ends by meansof the head Cr. Passing centrally through said head C is a verticalshaft H, journaled in a stuffing-box I and carying an inverted bell J atits upper end which receives the cylinders E and F and rotates betweenthe cylinder E and the drum A, said drum acting as a stirrer to agitatethe liquid and prevent same from coagulating on said drum and dividingthe space between said cylinder E and the inner wall of the heatingdruminto two annular spaces K and K, communicating with each other at theirupper ends, and at the same time acting as an isolator to prevent theliquid contained in said bell from being further heated from said drum.'Said shaft H is suitably geared to a source of power by means of whichit is rotated.

The liquid is introduced into the lower end of the annular chamber L,between the cylinders E and F, by means of a pipe M, and passes upwardlythrough said space. Thence it passes through a pipe L to the lower endof the annular space K and passes upwardly therethrough and is heated tothe desired temperature during such passage. Then it flows over theupper edge of said bell and into the annular space K, the cylinder Ebeing preferably corrugated to increase its surface. From said space Kthe liquid is exhausted through the pipe 0. It will be noted that thecool liquid introduced into the chamberL passes upwardly along the innerface of said cylinder E, while the heated liquid passes downwardly alongthe outer face thereof, and during such passage the cooler liquidabsorbs a large part of the heat of said hot liquid, so that the latteris cooled and the former heated, such interchange of temperatureeffecting considerable economy of steam or other heating fluid.

I desire to call attention to the fact that if my said apparatus isinverted the action will be exactly the same.

My said apparatus is both simple and efficient, and is particularlyadapted for sterilizing or pasteurizing milk.

I claim as my invention- An apparatus of the kind specified comprisingan annular heating-drum, an annular chamber of less height and diameterthan said drum concentric therewith and projecting into one end of thecylindrical chamber in the center of said drum, a shaft enteringsaidcylindrical chamber at its' other end, a bell carried thereby of lessdiameter than said drum and greater diameter than said annular chamberand projecting into the space between said drum and said annular chamberto divide said space into inner and outer annular spaces communicatingwith each other at one end, a feed-pipe entering said annular chamber atone end, a In testimony whereofI afiix my signature in pipeestabtlishgig COIIIIHUDLCatiODdbQtXXGEIBIH said presence of twoWitnesses.

annu ar 0 am er at its 0t er en an t e opposite end of the outermost ofsaid annular JOSEPH WILLMANN' spaces, and an exhaust-pipe leading fromthe Witnesses:

corresponding end of the innermost of said an- RUDOLPH WM. LOTZ,

nular chambers, substantially as described. WM. B. SNoWHooK.

